You may notice there's a Twitter feed on my profile page. You'll also notice that it's empty. That's because I took the momentous decision to close my account. I've left the party, I'm Indiana Jones, machete in hand, cutting the ropes and severing the bridge. Why? Am I insane?

So what makes a video go viral? And what are sketch makers doing to compete? Benton the dog, the Britney fan who screams 'leave her alone!' the Jedi Kid - is the trick for sketch producers' success on Youtube to scour the 'most watched' clips, to be ready to pounce on the next clip with the potential to spread like a middle age midriff?